* timezone module: fixed platform decision rule for Linux
— For better handling of environments where timedatectl is unavailable
* timezone module: allow absence of configuration files if specific commands are available
* timezone module: remove duplicated line
* timezone module: fixed docs to clarify returned diff
* timezone module: fixed “undefined variable err”
* Revert "timezone module: fixed docs to clarify returned diff"
This reverts commit 4b783227f713eee9aa6717c0a8b9e697b939f471.
* timezone module: revert platform decision rule; just warn instead of futher command checks
* timezone module: [NosystemdTimezone] enhanced error message
934ae28365